Letters x, y, and z are angle measures. which
equations would guarantee that lines p and q are
parallel? check all that apply.
z=x
x+y= 180°
x+z=180°
x=y
y +z = 180°

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73